Variant 1
ECU- Catalog engine
- 2000 140HP
- Controller brand
- DENSO
- ECU
- RF7J
- Stock power
- 140 HP
- ECU SW
- 18881U
- ECU HW
- G40KRF7JT3KA
MAZDA · RF7J ECU
MAZDA 6 RF7J tuning files
MAZDA 6 on the RF7J: matched, calibrated and delivered with care. Stock output across the matched variants spans 140–140 HP. 3 distinct variants are catalogued here. For this platform the dependable path begins with Stage 1 and Stage 2. Each file is tied to the precise software on your car and checked before it goes out.
Available solutions
Solutions that apply to the RF7J on this vehicle platform. The exact set depends on the specific engine and software version.
Engine variants & ECU software
3 distinct variants for the MAZDA 6 on the RF7J ECU. Reference the engine and controller software when you upload.
Variant 2
ECU- Catalog engine
- 2000 140HP
- Controller brand
- DENSO
- ECU
- RF7J
- Stock power
- 140 HP
- ECU SW
- 18881L
- ECU HW
- G40DRF7JT3DL
Variant 3
ECU- Catalog engine
- 2000 140HP
- Controller brand
- DENSO
- ECU
- RF7J
- Stock power
- 140 HP
- ECU SW
- 18881M
- ECU HW
- G40HRF7JT3HB
Related vehicles
Other vehicles built on the RF7J controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the MAZDA 6 on the RF7J?
Stage 1, Stage 2. The exact set depends on the specific engine and software version.
Do you cover the RF7J ECU software on this model?
Yes — the MAZDA 6 on the RF7J ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.
How is the file delivered?
Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.